SIMBAD references

We describe the construction of a catalogue of galaxies in the optical field of the Hubble Deep Field South. The HDF-S observations produced WFPC2 images in U, B, V, and I, the version 1 data have been made public on 23 November 1999. The effective field of view is 4.38 arcmin², and the 5σ limiting magnitudes (in a FWHM aperture) are 28.87, 29.71, 30.19, 29.58 in the U, B, V and I bands, respectively. We created a catalogue for each pass-band (I₈₁₄, V₆₀₆, B₄₅₀, U₃₀₀), using simulations to account for incompleteness and spurious sources contamination. Along with photometry in all bands, we determined on the I₈₁₄-selected catalogue (I₈₁₄<26) structural parameters, such as a metric apparent size, derived from the petrosian radius, an asymmetry index, light concentration indexes and the mean surface brightness within the petrosian radius.